名词
中文翻译：百分率
同义词：
['fraction', 'proportion']
例句：
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1.The company's profit margin is 20%.
公司的利润率是20%。
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2.The cost of living in this city is 3% higher than last year.
这个城市的生活成本比去年高3%。
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3.The sales volume has increased by 5% compared to last year.
与去年相比，销售量增加了5%。